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Liquidity - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Oct. 02, 2023
Oct. 31, 2023
May 31, 2023
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Cash And Cash Equivalents [Line Items]                        
Net loss       $ (10,861) $ (8,475) $ (8,356) $ (6,132) $ (6,725) $ (5,724) $ (27,692) $ (18,581)  
Accumulated deficit       (265,114)           (265,114)   $ (237,422)
Cash and cash equivalents       52,437           52,437   14,602
Net cash used in operating activities                   (18,626) $ (15,638)  
Proceeds from issuance or sale of equity $ 129,000                 16,000    
Proceeds from warrant exercise                   19,445    
Securities Purchase Agreement [Member]                        
Cash And Cash Equivalents [Line Items]                        
Sale and issuance of warrants     $ 10,000                  
Subsequent Event [Member]                        
Cash And Cash Equivalents [Line Items]                        
Proceeds from issuance or sale of equity   $ 113,000                    
Tranche A [Member]                        
Cash And Cash Equivalents [Line Items]                        
Proceeds from warrant exercise                   15,000    
Tranche B [Member]                        
Cash And Cash Equivalents [Line Items]                        
Contingent receipt upon exerise of warrants and future performance of company                   $ 17,500    
Tranche B [Member] | Subsequent Event [Member]                        
Cash And Cash Equivalents [Line Items]                        
Proceeds from warrant exercise   $ 17,500                    
Underwritten Public Offering [Member] | Securities Purchase Agreement [Member] | Maximum [Member]                        
Cash And Cash Equivalents [Line Items]                        
Proceeds from sale of common stock, net of costs                       $ 60,000
March 2022 Warrants [Member]                        
Cash And Cash Equivalents [Line Items]                        
Proceeds from warrant exercise       $ 8,400